package com.sky.service.admin.impl;

import cn.hutool.core.bean.BeanUtil;
import cn.hutool.crypto.digest.BCrypt;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.dto.PasswordEditDTO;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.admin.EmployeeMapper;
import com.sky.pojo.Employee;
import com.sky.result.PageResult;
import com.sky.service.admin.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import javax.annotation.Resource;
import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Resource
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();//

        //1、根据用户名查询数据库中的数据  select * from employee where username = #{username}
        Employee employee = employeeMapper.getByUsername(username); //

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // TODO 后期需要进行md5加密，然后再进行比对
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }
        //3、返回实体对象
        return employee;
    }

    /**
     * 新增员工
     *
     * @param employeeDTO
     */
    @Override
    public void save(EmployeeDTO employeeDTO) {
        //对象属性拷贝
        Employee employee = new Employee();
        BeanUtil.copyProperties(employeeDTO, employee);
        //设置账号的状态，默认正常状态 1表示正常 0表示锁定
        employee.setStatus(StatusConstant.ENABLE);
        //设置密码，默认密码123456
        String password = BCrypt.hashpw("123456", BCrypt.gensalt());
        employee.setPassword(password);
        //设置当前记录的创建时间和修改时间
        employee.setUpdateTime(LocalDateTime.now());
        employee.setCreateTime(LocalDateTime.now());
        //设置当前记录创建人id和修改人id
        employee.setCreateUser(1L);
        employee.setUpdateUser(1L);
        employeeMapper.save(employee);
    }


    /**
     * 员工分页
     *
     * @param employeePageQueryDTO
     * @return
     */
    @Override
    public PageResult getPage(EmployeePageQueryDTO employeePageQueryDTO) {
        PageHelper.startPage(
                employeePageQueryDTO.getPage(),
                employeePageQueryDTO.getPageSize()
        );
        Page<Employee> page = employeeMapper.getPage(employeePageQueryDTO);
        long total = page.getTotal();
        List<Employee> records = page.getResult();
        return new PageResult(total, records);
    }


    /**
     * 员工启用禁用
     *
     * @param status
     */
    @Override
    public void startOrStop(Integer status, Long id) {
        employeeMapper.startOrStop(status, id);
    }

    /**
     * 根据员工id回显
     *
     * @param id
     * @return
     */
    @Override
    public Employee findById(Long id) {
        Employee employee = employeeMapper.findById(id);
        return employee;
    }


    /**
     * 修改员工
     *
     * @param employee
     */
    @Override
    public void update(Employee employee) {
        employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.update(employee);
    }
}
